The Epiphany is technically low pressure, and while the owners manual recommends a low pressure tank, I have actually found that high pressure tanks seem to be more consistent. Like most guns, the Epiphany has its' own regulator, so using a high pressure tank is no problem as then gun itself won't use any more air pressure than needed.
Shot drop off occurs less frequently because pressure stays more consistent in my experience. I'd recommend the high pressure tank for that reason, and also because high pressure tanks work with just about every gun except the APS Angel A1 and A1 Fly.
Team: Harding University Team Revelation
Sponsor: Splat Action Paintball & Tech T Paintball
Guns: APS Angel A1